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Learn MoreJoe Calzaghe wants to see James DeGale and George Groves fight again - in a world title unification showdown.
The former super-middleweight king believes the bitter rivals' rematch could be a box office attraction, as long as they both have world titles.
DeGale is the IBF champion while Groves takes on Badou Jack for the WBC version in the autumn, possibly on Floyd Mayweather's next undercard in September.
And Calzaghe, who says he would have "demolished" Carl Froch had they met, wants to see two more bitter rivals do it again. They first fought in May 2011, with Groves clinching a majority decision victory over the Olympic gold medallist.
"Groves did the job for the British title first time around, so this is a natural rematch," he told Sky Sports News HQ.
"The first fight was close and you could make an argument for both of them winning that so there is unfinished business and a natural unification fight to put together.
"It's another super-middleweight grudge match.
"It's potentially box office but Groves has to be impressive in his next fight. I think he has got a great chance of winning that world title challenge against Badou Jack.
"He was in Chicago watching him win the title and I think he can beat him - then it could be box office. And everybody loves a grudge match!"
Calzaghe was talking to Sky Sports’ David Tanner at an Action For Children Sports Dinner in Glasgow. For more information please visit www.actionforchildren.org.uk/
